Changing default gh actions workflow to matrix build

.github/workflows/build-vmdb2-images-matrix.yaml

@@ -3,10 +3,10 @@ name: Build images matrix
 # Controls when the action will run. Triggers the workflow on push or pull request
 # events but only for the master branch
 on:
-  push:
-    branches: [ gh_actions ]
-#  schedule:
-#    - cron:  '42 0 * * *'
+#  push:
+#    branches: [ main, work]
+  schedule:
+    - cron:  '42 0 * * *'
   workflow_dispatch:
 #  pull_request:
 #    branches: [ master ]